I tried creating the prediction by giving a biger impulse ti increase speed, but all the variables need to be changed to create the same trajectory, since it all depends of time, and C2 precision, everything goes wrong. Since trajectory depends on gravity and time, if you want to make a game without gravity involved it can make good prediction.
I aso tried with setting the timescale, but no luck https://dl.dropboxusercontent.com/u/139 ... ry_v4.capx
P.S. change the global variable Gravity from 10 to 0 to see that prediction is much better.